三种植物活性提取物水乳剂对蚜虫到和叶螨的毒力测定及田间药效评价-动物学专业毕业论文.docx

4．5％GTW水乳剂具有较显著的增效作用，增效倍数分别为6．5倍和8．1倍。三种水乳剂 4．5％GTW水乳剂具有较显著的增效作用，增效倍数分别为6．5倍和8．1倍。三种水乳剂 对核桃土耳其斯坦叶螨田间防效均低于55．01％。 4．5％XAP、4．5％GTW、4．5％ANX水乳剂对危害茄子的土耳其斯坦叶螨LC50分别 为3 1 0．7 1 1 mg／kg，3 1 8．553 mg／kg和322．678 mg／kg。四硅氧烷对4．5％XAP水乳剂增效 作用达4．1倍。三种水乳剂对危害茄子土耳其斯坦叶螨(Tetranychus turkestani)的田间 防效低于51．47％。 (5)4．5％XAP水乳剂、4．5％GTW水乳剂、4．5％ANX水乳剂对危害黄秋葵的棉蚜 LC50分别为0．556 mg／kg，0．321 mg／kg和0．542 mg／kg。四硅氧烷对4．5％XAP水乳剂和 4．5％ANX水乳剂增效作用差异达显著性水平，增效倍数分别为4．3倍和4．0倍。4．5％ANX 水乳剂对棉蚜的防效最高，150 mg／kg防效达70．02％，四硅氧烷增效剂处理较单剂处理 差异达极显著性水平，最高防效为81．26％。 4．5％XAP水乳剂、4．5％GTW水乳剂、4．5％ANX水乳剂对危害小白菜的桃蚜LC50 分别为0．729 mg／kg，1．097 mg／kg，0．417 mg／kg。四硅氧烷对4．5％XAP水乳剂起到了显 著的增效作用，增效倍数为9．0倍。4．5％XAP水乳剂对桃蚜的防效最高，150 mg／kg防 效为71．61％，增效剂较单剂处理差异达极显著性水平，最高防效达84．40％。 关键词：植物提取物水乳剂；毒力测定；田间药效；蚜虫；叶螨；四硅氧烷。 II 万方数据 Toxicity Toxicity Assessmeat and Control Effiency of Three Botanical Emulsion in Water on Aphids and Spider mites on Different Crops Abstract In the thesis，susceptibility of three botanical emulsion in water to different crops were evaluated，and the synergists with extremely significant synergistic effect were screening out， and toxicities as well as field efficacy of three botanical emulsion in water to aphids and Ieaf mites on different crops were evaluated．key points as follows： (1)By the testing of pot-cultivated experiments，three botanical emulsion in water to wheat，sorghum，cucumbers，peppers，cowpea,celery cabbage are safety,but 4．5％EW of XAP and 4．5％EW of GTW showed slight acute phytotoxicity to tomatoes．and the inhibition extents of three botanical emulsion in water are less than 5％to all tested 7 crops． All of tested synergists displayed synergistic effects to three botanical emulsion in water， and TMDSO showed extremely significant synergistic effects，the synergistic-fold of 4．5％ EW of XAP，4．5％EW of GTW,4．5％EW of ANX reached to 60．1，63．3 and 86．5， respectively． (2)LC50 values of 4．5％EW of XAP，4．5％EW of GTW：4．5％EW of ANX to Aphis citricola are 0．034 mg／kg，0．233 mg／kg and 0．263 mg／kg，respectively．There are no significant d